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[From Wikipedia] International Mother Earth Day was established in 2009 by the General Assembly. The Resolution was introduced by The Plurinational State of Bolivia and endorsed by over 50 member states. It recognizes that “the Earth and its ecosystems are our home” and that “it is necessary to promote harmony with nature and the Earth.” [...]

September 16 was designated by the United Nations General Assembly as the International Day for the Preservation of the Ozone Layer. This designation was made on December 19, 1994, in commemoration of the date, in 1987, on which nations signed the Montreal Protocol on Substances that Deplete the Ozone Layer. [Text: Wikipedia, Image: http://www.treehugger.com/]